20359243385 has 32 divisors (see below), whose sum is σ = 27830573568. Its totient is φ = 14183769600.

The previous prime is 20359243363. The next prime is 20359243393. The reversal of 20359243385 is 58334295302.

It is not a de Polignac number, because 20359243385 - 2¹² = 20359239289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15860 + ... + 202410.

It is an arithmetic number, because the mean of its divisors is an integer number (869705424).

Almost surely, 2^20359243385 is an apocalyptic number.

It is an amenable number.

20359243385 is a deficient number, since it is larger than the sum of its proper divisors (7471330183).

20359243385 is a wasteful number, since it uses less digits than its factorization.

20359243385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186665.

The product of its (nonzero) digits is 777600, while the sum is 44.

The spelling of 20359243385 in words is "twenty billion, three hundred fifty-nine million, two hundred forty-three thousand, three hundred eighty-five".